1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2013, Digium, Inc.
*
* Matt Jordan <mjordan@digium.com>
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*! \file
*
* \brief The Asterisk Management Interface - AMI (MWI event handling)
*
* \author Matt Jordan <mjordan@digium.com>
*/
#include "asterisk.h"
#include "asterisk/manager.h"
#include "asterisk/app.h"
#include "asterisk/channel.h"
#include "asterisk/stasis_message_router.h"
#include "asterisk/stasis.h"
struct stasis_message_router *mwi_state_router;
/*** DOCUMENTATION
***/
/*! \brief The \ref stasis subscription returned by the forwarding of the MWI topic
* to the manager topic
*/
static struct stasis_forward *topic_forwarder;
/*! \brief Callback function used by \ref mwi_app_event_cb to weed out "Event" keys */
static int exclude_event_cb(const char *key)
{
if (!strcmp(key, "Event")) {
return -1;
}
return 0;
}
/*! \brief Generic MWI event callback used for one-off events from voicemail modules */
static void mwi_app_event_cb(void *data, struct stasis_subscription *sub,
struct stasis_message *message)
{
struct ast_mwi_blob *payload = stasis_message_data(message);
RAII_VAR(struct ast_str *, channel_event_string, NULL, ast_free);
RAII_VAR(struct ast_str *, event_buffer, NULL, ast_free);
struct ast_json *event_json = ast_json_object_get(payload->blob, "Event");
if (!event_json) {
return;
}
if (payload->mwi_state && payload->mwi_state->snapshot) {
channel_event_string = ast_manager_build_channel_state_string(payload->mwi_state->snapshot);
}
event_buffer = ast_manager_str_from_json_object(payload->blob, exclude_event_cb);
if (!event_buffer) {
ast_log(AST_LOG_WARNING, "Failed to create payload for event %s\n", ast_json_string_get(event_json));
return;
}
manager_event(EVENT_FLAG_CALL, ast_json_string_get(event_json),
"Mailbox: %s\r\n"
"%s"
"%s",
payload->mwi_state ? payload->mwi_state->uniqueid : "Unknown",
ast_str_buffer(event_buffer),
channel_event_string ? ast_str_buffer(channel_event_string) : "");
}
static void mwi_update_cb(void *data, struct stasis_subscription *sub,
struct stasis_message *message)
{
struct ast_mwi_state *mwi_state;
RAII_VAR(struct ast_str *, channel_event_string, NULL, ast_free);
if (ast_mwi_state_type() != stasis_message_type(message)) {
return;
}
mwi_state = stasis_message_data(message);
if (!mwi_state) {
return;
}
if (mwi_state->snapshot) {
channel_event_string = ast_manager_build_channel_state_string(mwi_state->snapshot);
}
/*** DOCUMENTATION
<managerEventInstance>
<synopsis>Raised when the state of messages in a voicemail mailbox
has changed or when a channel has finished interacting with a
mailbox.</synopsis>
<syntax>
<channel_snapshot/>
<parameter name="Mailbox">
<para>The mailbox with the new message, specified as <literal>mailbox</literal>@<literal>context</literal></para>
</parameter>
<parameter name="Waiting">
<para>Whether or not the mailbox has messages waiting for it.</para>
</parameter>
<parameter name="New">
<para>The number of new messages.</para>
</parameter>
<parameter name="Old">
<para>The number of old messages.</para>
</parameter>
</syntax>
<description>
<note><para>The Channel related parameters are only present if a
channel was involved in the manipulation of a mailbox. If no
channel is involved, the parameters are not included with the
event.</para>
</note>
</description>
</managerEventInstance>
***/
manager_event(EVENT_FLAG_CALL, "MessageWaiting",
"%s"
"Mailbox: %s\r\n"
"Waiting: %d\r\n"
"New: %d\r\n"
"Old: %d\r\n",
AS_OR(channel_event_string, ""),
mwi_state->uniqueid,
ast_app_has_voicemail(mwi_state->uniqueid, NULL),
mwi_state->new_msgs,
mwi_state->old_msgs);
}
static void manager_mwi_shutdown(void)
{
stasis_forward_cancel(topic_forwarder);
topic_forwarder = NULL;
}
int manager_mwi_init(void)
{
int ret = 0;
struct stasis_topic *manager_topic;
struct stasis_topic *mwi_topic;
struct stasis_message_router *message_router;
manager_topic = ast_manager_get_topic();
if (!manager_topic) {
return -1;
}
message_router = ast_manager_get_message_router();
if (!message_router) {
return -1;
}
mwi_topic = ast_mwi_topic_all();
if (!mwi_topic) {
return -1;
}
topic_forwarder = stasis_forward_all(mwi_topic, manager_topic);
if (!topic_forwarder) {
return -1;
}
ast_register_cleanup(manager_mwi_shutdown);
ret |= stasis_message_router_add(message_router,
ast_mwi_state_type(),
mwi_update_cb,
NULL);
ret |= stasis_message_router_add(message_router,
ast_mwi_vm_app_type(),
mwi_app_event_cb,
NULL);
/* If somehow we failed to add any routes, just shut down the whole
* thing and fail it.
*/
if (ret) {
manager_mwi_shutdown();
return -1;
}
return 0;
}
|
